projects / mirror_ubuntu-hirsute-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 478fcb2c WD |
1 | /* |
| 2 | * Copyright (C) 2012 ARM Ltd. | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License version 2 as | |
| 6 | * published by the Free Software Foundation. | |
| 7 | * | |
| 8 | * This program is distributed in the hope that it will be useful, | |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 11 | * GNU General Public License for more details. | |
| 12 | * | |
| 13 | * You should have received a copy of the GNU General Public License | |
| 14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 15 | */ | |
| 16 | #ifndef __ASM_DEBUG_MONITORS_H | |
| 17 | #define __ASM_DEBUG_MONITORS_H | |
| 18 | ||
| 19 | #ifdef __KERNEL__ | |
| 20 | ||
| 21 | #define DBG_ESR_EVT(x) (((x) >> 27) & 0x7) | |
| 22 | ||
| 23 | /* AArch64 */ | |
| 24 | #define DBG_ESR_EVT_HWBP 0x0 | |
| 25 | #define DBG_ESR_EVT_HWSS 0x1 | |
| 26 | #define DBG_ESR_EVT_HWWP 0x2 | |
| 27 | #define DBG_ESR_EVT_BRK 0x6 | |
| 28 | ||
| 29 | enum debug_el { | |
| 30 | DBG_ACTIVE_EL0 = 0, | |
| 31 | DBG_ACTIVE_EL1, | |
| 32 | }; | |
| 33 | ||
| 34 | /* AArch32 */ | |
| 35 | #define DBG_ESR_EVT_BKPT 0x4 | |
| 36 | #define DBG_ESR_EVT_VECC 0x5 | |
| 37 | ||
| 38 | #define AARCH32_BREAK_ARM 0x07f001f0 | |
| 39 | #define AARCH32_BREAK_THUMB 0xde01 | |
| 40 | #define AARCH32_BREAK_THUMB2_LO 0xf7f0 | |
| 41 | #define AARCH32_BREAK_THUMB2_HI 0xa000 | |
| 42 | ||
| 43 | #ifndef __ASSEMBLY__ | |
| 44 | struct task_struct; | |
| 45 | ||
| 46 | #define local_dbg_save(flags) \ | |
| 47 | do { \ | |
| 48 | typecheck(unsigned long, flags); \ | |
| 49 | asm volatile( \ | |
| 50 | "mrs %0, daif // local_dbg_save\n" \ | |
| 51 | "msr daifset, #8" \ | |
| 52 | : "=r" (flags) : : "memory"); \ | |
| 53 | } while (0) | |
| 54 | ||
| 55 | #define local_dbg_restore(flags) \ | |
| 56 | do { \ | |
| 57 | typecheck(unsigned long, flags); \ | |
| 58 | asm volatile( \ | |
| 59 | "msr daif, %0 // local_dbg_restore\n" \ | |
| 60 | : : "r" (flags) : "memory"); \ | |
| 61 | } while (0) | |
| 62 | ||
| 63 | #define DBG_ARCH_ID_RESERVED 0 /* In case of ptrace ABI updates. */ | |
| 64 | ||
| 65 | u8 debug_monitors_arch(void); | |
| 66 | ||
| 67 | void enable_debug_monitors(enum debug_el el); | |
| 68 | void disable_debug_monitors(enum debug_el el); | |
| 69 | ||
| 70 | void user_rewind_single_step(struct task_struct *task); | |
| 71 | void user_fastforward_single_step(struct task_struct *task); | |
| 72 | ||
| 73 | void kernel_enable_single_step(struct pt_regs *regs); | |
| 74 | void kernel_disable_single_step(void); | |
| 75 | int kernel_active_single_step(void); | |
| 76 | ||
| 77 | #ifdef CONFIG_HAVE_HW_BREAKPOINT | |
| 78 | int reinstall_suspended_bps(struct pt_regs *regs); | |
| 79 | #else | |
| 80 | static inline int reinstall_suspended_bps(struct pt_regs *regs) | |
| 81 | { | |
| 82 | return -ENODEV; | |
| 83 | } | |
| 84 | #endif | |
| 85 | ||
| 86 | #endif /* __ASSEMBLY */ | |
| 87 | #endif /* __KERNEL__ */ | |
| 88 | #endif /* __ASM_DEBUG_MONITORS_H */ |